Avulsion fractures of the knee occur when tensile forces cause a bone fragment to separate at the site of soft tissue attachment. These injuries, which frequently affect adolescent athletes, can involve the cruciate and collateral ligaments, arcuate complex, iliotibial band, and patellar and quadriceps tendons. Radiographs aid in the initial diagnosis, while computed tomography and magnetic resonance imaging facilitate a comprehensive evaluation of injury severity and concomitant damage. Specific avulsion fracture types include: anterior cruciate ligament avulsions (tibial site, Meyers and McKeever classification), posterior cruciate ligament avulsions (tibial attachment, Griffith's classification), Segond fractures (anterolateral complex injury), iliotibial band avulsions, medial collateral ligament avulsions (reverse Segond, Stieda fractures), arcuate complex avulsions ("arcuate sign"), medial patellofemoral avulsions (patellar dislocations), and patellar/quadriceps tendon avulsions. The treatment depends on the fracture location, displacement, and associated injuries. Non-displaced fractures can be managed conservatively, while displaced fractures or those with instability require surgical reduction and fixation. Prompt recognition and appropriate intervention prevent complications such as deformity, nonunion, malunion, and residual instability. This review provides an overview of the pathogenesis, diagnosis, and management of knee avulsion fractures to guide clinical decision-making.
Purpose To assess the demographics, injury mechanisms, treatments, and outcomes of traumatic acute compartment syndrome in the thigh.
Materials and Methods Patients diagnosed with thigh compartment syndrome were analyzed retrospectively at the authors’ level I trauma center from March 2012 to February 2022. Data were collected from medical and radiological records, focusing on demographics, injury details, treatment timelines, and clinical outcomes.
Results The cohort included 13 patients (11 males and 2 females) with a mean age of 46 years. Injuries primarily resulted from falls (6 patients) and vehicle accidents (5 patients). Fractures were noted in 11 patients, with seven involving the lower extremities and seven having open fractures; three of these were severe enough to be classified as Gustilo–Anderson type IIIc with associated femoral artery injuries. Time from the injury to fasciotomy ranged from within six hours to more than 24 hours. Fasciotomies were mainly single-sided (10 patients), targeting primarily the anterior compartments, and bilateral in three cases. Wound closures were performed using delayed primary closure (four patients) and partial- thickness skin grafts (five patients). Two patients died from multi-organ failure; other complications included infections (three patients), amputations (three patients), and long-term disabilities like drop foot (two patients), sensory deficits, joint stiffness (eight patients), and fracture non-unions requiring additional surgery (two patients).
Conclusion Thigh-compartment syndrome, though infrequent, poses significant risks of mortality and chronic disability. This underscores the importance of prompt diagnosis and intervention.
Bone substitutes are being used increasingly in bony surgery as more than two million bone grafts are performed worldwide per year. Autobone grafts represent the gold standard for bone grafting, but morbidity and limited availability are the main problems. Allobone grafts are osteoconductive, but there are still concerns regarding the infection risks, costs, and donor availability issues. As an alternative, widely used ceramic-based synthetic bone substitutes are based alternatively on calcium (hydroxyapatite, tricalcium phosphate, calcium sulfate, calcium phosphate). Ceramic-based bone substitutes are osteoconductive, but they are weaker than cortical bone and are not osteoinductive. Bone morphogenic protein, demineralized bone matrix, and platelet-rich plasma are used to obtain an osteoinductive function. Recently, cell-based and gen-based bone substitutes were developed and studied.
This paper reviews the basic information and the latest concepts on bone grafts and bone substitutes.
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PURPOSE The purpose of this study is to evaluate the outcome of treatment for patients with Type IIIb open tibial fractures. MATERIALS AND METHODS This study targeted 35 adult patients for whom follow-up was possible over one year after undergoing surgical treatment. There were 29 males and six females with an average age of 45 years. RESULTS Fracture location was proximal in 10 cases, midshaft in 13 cases, and the distal part of the tibia in 12 cases. An average of 10 days was observed for definitive fixation with soft tissue coverage of the injury. The mean time to radiographic union was 27 weeks. Sixteen cases (45.7%) of complications were observed. Three cases of superficial infection, two cases of deep infection, four cases of partial flap necrosis, three cases of mal-alignment, three cases of joint stiffness, and one case of hardware breakage were observed. The mean lower extremity functional scale score was 68.5 and the factors influencing the clinical results were severity of open wound (p=0.000) and occurrence of complications (p=0.000) according to results of multiple regression analysis. CONCLUSION In treatment of Type IIIb open tibial fractures, good clinical results can be expected provided that complications are prevented through proper reduction, firm fixation, early soft tissue reconstruction, and early rehabilitation.
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PURPOSE The purpose of this study was to evaluate the effect of parathyroid hormone (PTH) on fracture healing in elderly patients. MATERIALS AND METHODS We analyzed the radiologic results in 14 patients. Group I (n=7) was administrated intermittent PTH after surgical treatment and group II (n=7) was treated only with surgery. We checked the time of initial callus formation, bridging callus formation, and bone union through periodic follow-up radiographs by a radiologist who did not know the patient's information. RESULTS The mean time to initial callus formation was 6 weeks for group I, compared with 6.7 weeks for group II. The mean time to bridging callus formation was 15.9 weeks for group I, compared with 23.0 weeks for group II. The mean time to bone union was 28.7 weeks for group I, compared with 41.9 weeks for group II. The difference in the cumulative detection rate (CDR) of the initial callus formation of group I and II was not statistically significant (p=0.793). However, the CDR of the bridging callus formation and bone union for group I were higher than those of group II (p=0.008, p=0.001, respectively). CONCLUSION The intermittent PTH administration after surgical treatment and maximum possible preservation of the periosteum in elderly patients accelerates fracture healing.
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